Short answer: NO.
Performance increase with AMD Dual graphics (IGP + Discrete Graphics) is not going to be as great as using higher end discrete R7/R9 cards.
You can take a look at reviews on Youtube and other sites. My personal setup is AMD A10-7700K + R7 240 2GB GDDR3 (eff: 1800MHz) - real world perf: Battlefield 4 at 1080p 60Hz is on LOW settings: average 20-35fps (no overclock for both IGP and R7 240).
Using AMD Overdrive - with IGP 800MHz and R7240 850Mhz, I had about 25-40fps. My RAM is DDR3 1600Mhz, maybe you can get more with faster DDR3 system RAM.
Your new setup would be at least 5-10fps higher than mine.
OS: Windows 8.1 with 8.1 Update
Catalyst: 14.4 (WHQL)
Battlefield display driver: Mantle
APU: A10-7700K - Main GPU
Sapphire R7-240 780Mhz 2GB GDDR3 900Mhz - Secondary GPU
Corsair ValueRAM DDR3 1600
Note: Cannot set the output/main graphics to the R7 240 with the Catalyst 14.4 due to driver issue.
03:58 PM by